Flexible drop-light tubing for gas lamps and burners.



l 'PATBNTED APR. 26, 1904. EDWARDS. FLEXIBLE `DROP LIGHT TUBING PoR GAS LAMPS AND BURNER" APPLIOA'I'ION FILED APB. 2.3, 1903.

.N0 MODEL.

` braided or Woven textile atar avenants oder; l

Nrrnn STATES Patented pril 26, 1904.

PmueixrrI OFFICE. 1

WILLIAM S. EDWARDS, OF CHICAGO, ILLlNOIS.

SPECIFICATION forming-part ef Lettere Patent Ne. 758,054, dated Aprn 2e, 1904.

Application lerl April 23, 1903. Serial No. 153,981. (No model.)

To all whom/'lit ntf/,y concern:

Be it known that I, WILLIAM S. EDWARDS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have made a certain new and useful Improvement in Flexible Drop-Light Tubing for Portable Gas Lamps and Burners, of which the following is a specification.

My invention relates to flexible tubing' adapted for connecting gas lamps and burners with a source oi supply and commonly known as drop-light tubing for portable gas-lamps.

Objects of my invention are to avoid the obn jectionable odor of gas with which the outer covering of ordinary flexible tubing for portable gas-lamps usually becomes impregnated after a season of use; to avoid permanent kinks or bends in the tubing as the result of accidental jamming, twisting, or sharp bending,

drop-light tubing heretofore involving a core of spirally-coiled wire, such as described in Letters Patent to M. M. Nicholls, No. 593,726, November 16, 1897; to counteract defects resulting from the tendency of flexible cement employed to become brittle and crack, and to provide a highsgrade, desirable, and efiicient construction of iiexible tubing for portable gas lamps and burners.

In the accompanying drawings, Figure 1 illustrates a section or portion of my improved vflexible drop-light tubing with parts of the several layers broken away, the tubing shown being about twice the normal size in order to more clearly distinguish theidiflerent layers. Fig. 2 is a section on line 2 2 in' Fig. 1,

The section of flexible tubing illustrated comprises a iiexible tubular core A, of rubber, which is `covered by a tubular layer B, of

material. This tubular layer Bis rendered impervious by some suitable solution or cement which, while subserving such purpose, will become pliable when set or hardened. so as not te materially impail-its flexibility. The impervious tubular layenl is incloscd by an out-erllexi ble tubular layer oreover C, of some suitable braided or Woven textile material such, for example, as silk or mohair. The core l is composed et' 1 to serve as a flexible and substantially impert vious lining which is restrained by the next outer impervious tubular layer of fabric and cement, and this impervious layer will supplement the rubber and cointeract defects which may in time occur in the tubular rubber core and protect the rubber from external atmospheric iniluences, and it will also resist further outward passage of oleaginous matter permeating the rubber. The tubular layer B of fabric can be dipped in or otherwise coated or treated with the cement compound or solution, which latter may be of any suitable material or materials, an effective-compound for such purpose, for example, being formed of glue and glycerin. The tubing thus constructed and prepared will not in the course of time have that disagreeable odor of gas noticeable in the case of the flexible tubingfor gas-lamps commonly made and sold, and. in the case of a sudden bend or. blow it will not become kin'ked or` jammed/out of" shape, as in the case of ordinary tubing forges-lamps, in which spirallyfwound wire is usually-incorporated The composite drop-light tube thus cornposed of the tubular-layers A B C can of course be manufactured of any length, and sections or sublengths can be cut off therefrom as desired, since none of such layers obstruct the ready cutting of the tubing. The layers also permanently combine to form the composite tubing. f

1What I claim as my invention is- As an article of manufacture, composite flexible drop-light tubing for portablli gas lampsg and burners composed of a tubular, vul- I 'l I .1' l y I canized soft-rubber core A, a flexible tubularA e and forming the outer Alayer of the composlte layer B, of fabric braided or Woven textile tubular structure. A

material rendered impervious by suitable'pli- A RDS.- v

able cement and inclosifng and forming a layer 5 upon .the ltubular rubber core, and an outerv Witnesses: .l

tubular covering C, of Woven textile material CHAS. G. PAGE,` v inelosing the said .imperviousvtubular layer ]i`.LIzAls1iztl.H BURKE- V 

